Hydrogen sensing properties of Pd/SnO2 nano-spherical composites under UV enhancement

Ultrasensitive and Wide‐Range Flexible Hydrogen Sensor Based on Pd Nanoparticles Decorated Ultrathin SnO2 Film

“…Table 1 summarizes the sensing performance of Pd-decorated SnO 2 system-based hydrogen sensors from various morphologies and processes. In comparison with reported literature, such as nanoparticles, nanowires, nanofibers, and thin films, [22,[26][27][28][29][30][31][32][33][34][35][36][56][57][58][59] the ALD-and CBD-derived Pd NPs/SnO 2 / PI thin film sensors in this work exhibit outstanding hydrogen sensing performances in the aspects of low operating temperature, high sensitivity, wide detection range, and low LOD. The superior performance may be ascribed to the unique structure consisting of ultrathin SnO 2 film and well-dispersed Pd NPs.…”

“…fabricated the Pd/SnO 2 nano‐spherical composites by hydrothermal method, which exhibited higher sensitivity and faster response than bare SnO 2 . [ 27 ] Wang et al. discovered that Pd decoration can improve the H 2 response of SnO 2 fibers at low temperature (160 °C) with LOD of 0.25 ppm.…”

“…[27] Wang et al discovered that Pd decoration can improve the H 2 response of SnO 2 fibers at low temperature (160 °C) with LOD of 0.25 ppm. [28] However, most of the reported works are based on the SnO 2 nanomaterials, such as nanoparticles, [29][30][31] nanowires, [26,32,33] nanofiber, [20,28,34,35] nanospheres, [27,36] and nanosheets. [37] These powdery materials can be synthesized by low-cost solution methods, which can also be made into sensing layer by simple approaches, such as dip-coating and drop-coating.…”

“…[37] These powdery materials can be synthesized by low-cost solution methods, which can also be made into sensing layer by simple approaches, such as dip-coating and drop-coating. [26,27] Nevertheless, in this way, the sensors suffer from the poor uniformity and contact in the sensing layer. In contrast, thin film techniques can form uniform film over a large area with easy thickness control, conductive to the reliable construction of sensors.…”

Insights into the solvothermal reaction for synthesizing tin(iv) oxide porous spheres

“…17,18 Solvothermal and hydrothermal approaches have also been used to fabricate SnO 2 nanoparticles with controlled morphologies based on optimizing synthetic parameters such as solvents, additives, concentrations and heating. 2,19 Using these various approaches, SnO 2 particles with a variety of higher-order structures, such as spherical aggregates of nanoparticles, [20][21][22] ower-like particles (aggregates of plate particles) [23][24][25][26] and urchin-like particles (aggregates of rod particles), 27 have been reported. Like this, synthetic conditions such as solvents and additives should affect the composition and shape of the products.…”